package com.itheima.reggie.config;

import com.itheima.reggie.common.JacksonObjectMapper;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

//放在resource下的静态资源没有config包是访问不到的
@Configuration//表示当前为配置类
public class WebmvcConfig extends WebMvcConfigurationSupport {
    /*
     * 自定义静态资源映射配置
     * addResourceHandlers : 设置静态资源映射，可以访问resource下的index.html
     * */
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        //管理端页面配置
        registry.addResourceHandler("/backend/**").
                addResourceLocations("classpath:/backend/");
        //客户端页面配置
        registry.addResourceHandler("/front/**").
                addResourceLocations("classpath:/front/");

    }

    /**
     * 扩展mvc框架的消息转换器
     *
     * @param converters
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {

        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0, messageConverter);
    }
}
